RPC & Indexers

RPC Providers

Citrea provides a free RPC endpoints for developers to use: https://rpc.testnet.citrea.xyz. For small projects & simple queries, you may use this endpoint safely as it offers generous rate limits.

However, for larger projects or production use, we recommend setting up your own RPC node or a dedicated RPC provider.

Blast API

Blast API is an RPC provider that offers a generous free tier and stronger paid plans for higher usage for Citrea. You may refer to their webpage for more details on the usage, under Citrea Testnet.

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Indexers

Goldsky

Goldsky is a Web3-native, real-time data platform that lets you index and query on-chain data without wrangling infrastructure. Built for effortless scale and backed by 24 × 7 support, it frees you to ship features instead of managing servers.

Citrea supports both Goldsky Subgraphs Goldsky Mirrors. Subgraphs provide high-performance, custom-modeled queries with smart tagging for precise filtering for your development, and Mirrors stream live blockchain events straight into your own database and keeps data continuously in sync.

As a developer building on Citrea, you can utilize Goldsky products with discount. Check out Citrea page on their documentation for more information and kickstart your development!

Note: The correct Citrea slug for Goldsky is citrea-testnet-tangerine.

Envio

Envio is a super-fast data platform on Citrea with HyperIndex and HyperSync support.

Using Envio HyperIndex you can transform on-chain events into structured, queryable databases with GraphQL APIs.

Envio HyperSync is Envio's high-performance blockchain data engine that serves as a direct replacement for traditional RPCs for read-only endpoints, delivering up to 2000x faster data access.

SubQuery

SubQuery is an open‑source indexing framework that turns raw Citrea events into fast, flexible GraphQL APIs. It supports multi‑chain projects in a single workspace, lets you run multiple workers behind custom RPC endpoints for higher throughput, and can be self‑hosted or pushed to the decentralised SubQuery Network for SLA‑backed serving.

• Get started: follow the Quick‑Start guide to scaffold and run a project in minutes.

• Starter repo: clone the template for Citrea Testnet.

• Deployment options: run locally, host with OnFinality/Traceye, or publish to the SubQuery Network for decentralized uptime and rewards.